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A268119
Number of nX(n+3) arrays of permutations of n+3 copies of 0..n-1 with every element equal to or 1 greater than any north or west neighbors modulo n and the upper left element equal to 0.
0
1, 126, 414, 7396, 253472, 15303976, 1582675968, 276165720476
OFFSET
1,2
COMMENTS
Superdiagonal 3 of A268115.
EXAMPLE
Some solutions for n=4
..0..0..0..1..2..2..3....0..0..0..1..1..2..3....0..1..1..2..2..2..3
..0..1..1..1..2..3..3....0..0..1..1..1..2..3....0..1..2..3..3..3..0
..0..1..2..2..2..3..0....0..1..2..2..2..3..3....1..1..2..3..3..0..0
..1..2..3..3..3..0..1....0..1..2..2..3..3..3....1..2..2..3..0..0..1
CROSSREFS
Cf. A268115.
Sequence in context: A323759 A102805 A267556 * A202406 A202399 A201467
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 26 2016
STATUS
approved